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Noreena Downs Station, East Pilbara Shire, Western Australia, Australiai
Regional Level Types
Noreena Downs Station- not defined -
East Pilbara ShireShire
Western AustraliaState
AustraliaCountry

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Key
Latitude & Longitude (WGS84):
22° 17' 27'' South , 120° 10' 35'' East
Latitude & Longitude (decimal):
Köppen climate type:
Nearest Settlements:
PlacePopulationDistance
Nullagine215 (2014)45.1km


The station homestead is 80 kilometres south south-east of Nullagine. Deposits may also occur on Balfour Station directly east of Noreena Downs Station.

There are various small agate-carnelian sites on the station, although specific information on individual locations is lacking. Some material has been mined for the specimen trade, with one dealer regularly attending the Tuscon show.

The upper parts of the Maddina and Kylena Formations contain the agate and carnelian. The Maddina Formation is dark green to grey massive vesicular and amygdaloidal metabasalt. In some upper parts of this is found large amygdales to 50cm across, infilled with pink to red carnelian bearing agate, and also containing chlorite, carbonates, quartz and stilpnomelane.

Agate also occurs in the Coondoon Formation, which is poorly sorted conglomerate containing clasts of silica and agate.

The Davis River crosses the eastern part of the station, where brown and white agate is said to be abundant in the gravels.

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List

Mineral list contains entries from the region specified including sub-localities

2 valid minerals.

Rock Types Recorded

Note: this is a very new system on mindat.org and data is currently VERY limited. Please bear with us while we work towards adding this information!

Rock list contains entries from the region specified including sub-localities

Select Rock List Type

Alphabetical List Tree Diagram

Detailed Mineral List:

'Chlorite Group'
Reference: Fetherston, J., Stocklmayer, S., Stocklmayer, V. (2013): Gemstones of WA, Geological Survey of WA
Quartz
Formula: SiO2
Reference: Fetherston, J., Stocklmayer, S., Stocklmayer, V. (2013): Gemstones of WA, Geological Survey of WA
Quartz var: Agate
Reference: Fetherston, J., Stocklmayer, S., Stocklmayer, V. (2013): Gemstones of WA, Geological Survey of WA
Quartz var: Carnelian
Reference: Fetherston, J., Stocklmayer, S., Stocklmayer, V. (2013): Gemstones of WA, Geological Survey of WA
Quartz var: Chalcedony
Formula: SiO2
Reference: Fetherston, J., Stocklmayer, S., Stocklmayer, V. (2013): Gemstones of WA, Geological Survey of WA
Stilpnomelane
Formula: (K,Ca,Na)(Fe2+,Mg,Al)8(Si,Al)12(O,OH)36 · nH2O
Reference: Fetherston, J., Stocklmayer, S., Stocklmayer, V. (2013): Gemstones of WA, Geological Survey of WA

List of minerals arranged by Strunz 10th Edition classification

Group 4 - Oxides and Hydroxides
Quartz4.DA.05SiO2
var: Agate4.DA.05SiO2
var: Carnelian4.DA.05SiO2
var: Chalcedony4.DA.05SiO2
Group 9 - Silicates
Stilpnomelane9.EG.40(K,Ca,Na)(Fe2+,Mg,Al)8(Si,Al)12(O,OH)36 · nH2O
Unclassified Minerals, Rocks, etc.
'Chlorite Group'-

List of minerals arranged by Dana 8th Edition classification

Group 74 - PHYLLOSILICATES Modulated Layers
Modulated Layers with joined islands
Stilpnomelane74.1.1.1(K,Ca,Na)(Fe2+,Mg,Al)8(Si,Al)12(O,OH)36 · nH2O
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si
Quartz75.1.3.1SiO2
Unclassified Minerals, Mixtures, etc.
'Chlorite Group'-
Quartz
var: Agate
-SiO2
var: Carnelian-SiO2
var: Chalcedony-SiO2

List of minerals for each chemical element

HHydrogen
H Stilpnomelane(K,Ca,Na)(Fe2+,Mg,Al)8(Si,Al)12(O,OH)36 · nH2O
OOxygen
O Quartz (var: Chalcedony)SiO2
O QuartzSiO2
O Stilpnomelane(K,Ca,Na)(Fe2+,Mg,Al)8(Si,Al)12(O,OH)36 · nH2O
NaSodium
Na Stilpnomelane(K,Ca,Na)(Fe2+,Mg,Al)8(Si,Al)12(O,OH)36 · nH2O
MgMagnesium
Mg Stilpnomelane(K,Ca,Na)(Fe2+,Mg,Al)8(Si,Al)12(O,OH)36 · nH2O
AlAluminium
Al Stilpnomelane(K,Ca,Na)(Fe2+,Mg,Al)8(Si,Al)12(O,OH)36 · nH2O
SiSilicon
Si Quartz (var: Chalcedony)SiO2
Si QuartzSiO2
Si Stilpnomelane(K,Ca,Na)(Fe2+,Mg,Al)8(Si,Al)12(O,OH)36 · nH2O
KPotassium
K Stilpnomelane(K,Ca,Na)(Fe2+,Mg,Al)8(Si,Al)12(O,OH)36 · nH2O
CaCalcium
Ca Stilpnomelane(K,Ca,Na)(Fe2+,Mg,Al)8(Si,Al)12(O,OH)36 · nH2O
FeIron
Fe Stilpnomelane(K,Ca,Na)(Fe2+,Mg,Al)8(Si,Al)12(O,OH)36 · nH2O

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Fetherston, J.M., Stocklmayer, S.M., Stocklmayer, V.C. (2013) Gemstones of Western Australia. Geological Survey of Western Australia, Mineral Resources Bulletin 25, 306 pages, at p 126.

Localities in this Region

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Australia
Australian PlateTectonic Plate

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